I've made basic search around the web and the forum but I didn't found anything that I feel complete. I found someone who want to buy my Mac. I'm going to format the disk, Zeroing 7 times If I can, then proceed to reinstall Mac OS X, all the bundled softwares and update it. I will also give to the new owner all that came with the Macbook (box, disk, etc.). Do I have to do anything? Like to give Apple the new informations about the new owner? Or do I just gave him the completly reinstalled Macbook and be done with it?